Thematische Bibliographien / WFM system

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Auswahl der wissenschaftlichen Literatur zum Thema „WFM system“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 1. Februar 2022

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Zeitschriftenartikel zum Thema "WFM system"

Degtyareva, V. V., P. M. Gureev und D. A. Trubkin. „THE MAIN PREREQUISITES FOR THE IMPLEMENTATION OF THE WORKFORCE MANAGEMENT SYSTEM TO OPTIMIZE STAFF WORKING HOURS“. Vestnik Universiteta, Nr. 1 (25.02.2021): 5–12. http://dx.doi.org/10.26425/1816-4277-2021-1-5-12.

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The purpose of the article is to study the principles of managing staff working time to reduce costs and increase efficiency, optimize labor processes, manage and predict the workload of staff, and implement methods and tools to improve efficiency. The article describes the main prerequisites for the implementation of the Workforce Management system (WFM), which is a methodology for planning employees’ working hours, which is a component of the personnel management concept. As a metric for evaluating the effect of using WFM systems, the planned or actual number of employees` hours per month is used – a comparison of the planned schedules before and after using the system is made. The effect of implementing WFM is as follows: increased staff efficiency, improved service level, revenue growth as a result of lower costs and more competent traffic coverage, increased staff involvement and saving management time.

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Ai, Qingsong, Kamil Maciuk, Paulina Lewinska und Lukasz Borowski. „Characteristics of Onefold Clocks of GPS, Galileo, BeiDou and GLONASS Systems“. Sensors 21, Nr. 7 (30.03.2021): 2396. http://dx.doi.org/10.3390/s21072396.

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This research is focused on searching for frequency and noise characteristics for available GNSS (Global Navigation Satellite Systems). The authors illustrated frequency stability and noise characteristics for a selected set of data from four different GNSS systems. For this purpose, 30-s-interval clock corrections were used for the GPS weeks 1982–2034 (the entirety of 2018). Firstly, phase data (raw clock corrections) were preprocessed for shifts and removal of outliers; GLONASS and GPS satellites characterize a smaller number of outliers than BeiDou and Galileo clock products. Secondly, frequency and Hadamard deviation were calculated. This study concludes that the stability of GPS and Galileo is better than that of BDS (BeiDou Navigation Satellite System) and GLONASS. Regarding noise, the GPS, Galileo, and BDS clocks are affected by the random walk modulation noise (RWFM), flashing frequency modulation noise (FFM), and white frequency modulation noise (WFM), whereas the GLONASS clocks are mainly affected only by WFM.

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Grigoryan, A. A. „WFM Systems as a Digital Business Transformation Tool“. Vestnik of the Plekhanov Russian University of Economics 17, Nr. 4 (23.07.2020): 187–94. http://dx.doi.org/10.21686/2413-2829-2020-4-187-194.

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The article focuses on the current problem – the efficiency of employees' working hours through the use of special systems for work time planning (workforce management). An analysis of the use of various management tools to create an effective employee schedule is presented. It has been shown that the number of companies implementing automated programs for recording and planning employees' working hours is gradually growing. The main advantages and disadvantages identified by managers implementing digital solutions in the work schedule process were identified. Various types of specialized software for creating a flexible work schedule have been investigated, as well as key criteria by which the best WFM systems are determined. In the course of this classification, parameters have been defined, which should be given special attention when deciding on the use of the WFM system in the company. Based on the results of the study conducted by the author, recommendations were developed for the implementation of such digital solutions in the company. The author concluded that these systems were necessary for enterprises focused on digitalizing their business, since they made it possible to optimize staff costs and increase employee efficiency.

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BERNHARDT, PAUL A. „COMMUNICATIONS USING CHAOTIC FREQUENCY MODULATION“. International Journal of Bifurcation and Chaos 04, Nr. 02 (April 1994): 427–40. http://dx.doi.org/10.1142/s0218127494000289.

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Chaotic Frequency Modulation (CFM) provides the basis for a nonlinear communications system with (1) good noise suppression and (2) analogue signal encryption for private and secure communications links. CFM is a generalization of conventional Wideband Frequency Modulation (WFM) where the information about modulation samples mk are contained in the lengths of the periods pk for the kth cycle of the WFM waveform. A WFM modulator produces waveform periods described by an invertible function of the form pk=F(mk). Chaotic FM uses a map of the pulse periods to produce a noise-like pulse train even with a constant signal. The basis for CFM is a function pk=F(mk; pk−1, pk−2, …, pk−i), where i is the dimensionality of the map. A practical realization for a CFM transmitter employs an autonomous chaotic relaxation oscillator (ACRO) circuit for use as a chaotic voltage-controlled oscillator (CVCO). The ACRO is simple to construct, consisting of only two capacitors, one inductor, a bistable nonlinear element, and a modulated current source. The CVCO period (pk) is a nonlinear function of the current (mk) and the two previous pulse periods. Demodulation requires the use of at least three successive waveform-periods. Experimental and theoretical studies of the CVCO circuit have shown that (1) the ACRO return maps of pulse periods are embedded in three dimensions, (2) chaotic outputs are difficult to decode without prior knowledge of the circuit parameters, and (3) demodulation may be accomplished with a digital signal processor.

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Long, J. C. „T-Max and TRI-X: Comparisons of Sheet Film Emulsions for Use in SEM Photography“. Proceedings, annual meeting, Electron Microscopy Society of America 48, Nr. 1 (12.08.1990): 426–27. http://dx.doi.org/10.1017/s0424820100180884.

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The potential benefits of Kodak's Tabular Grain Emulsion Films (brand name: T-MAX) has resulted in our lab considering a switch from Kodak TRI-X 4×5 sheet film to Kodak T-MAX 4x5 sheet film for use in SEM photography. The current regime is TRI-X sheet film developed in D-19 diluted 1:2. Processing is at 20°C in large (4l) tanks with N2 burst agitation. The procedure used for this study was T-MAX and TRI-X sheet film processed in T-MAX RS developer; using the same large tank, and No burst system, but at temperatures ranging from 20° -24°C. The potential benefits are: 1) Improved image quality; tabular grain emulsions are purported to have improved sharpness, a finer grain at a given film speed, and better tonal separation than previous emulsions. 2) Ease of use; T-MAX RS is a highly miscible liquid concentrate which can be used at 20°-24°C. The primary temperature recommendation is 24°C; this would reduce the need for chilled water at our facility.The initial comparison was made using Kodak TRI-X and Kodak T-MAX 400 sheet film. Exposures were made using a JEOL T330A equipped with a high resolution photo CRT and waveform monitor (WFM). Brightness settings were determined using the WFM in the procedure described by Holm. Four sets of eight exposures each were made for both T-MAX 400 and TRI-X. A set consisted of one sheet of film exposed at each of the zones represented by the lines of the WFM. One set of each type of film was processed at each of the four specified temperatures,(20°, 21° 22°,24°, using T-MAX RS developer, at the time recommended by Kodak. Negative density was determined using a Zeiss Axiophot equipped with a MPM 20 Photometer. The percent value of transmitted light (%T) was converted to diffuse density (D) using the formula D=Log 1/T. The calculated diffuse density was plotted against the brightness line position on the WFM. Granularity was examined by visual comparison using 12x enlargements from T-MAX and TRI-X negatives of similar density.

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Fan, Yanwei, Liangjun Ma, Hujun Wei und Pengcheng Zhu. „Numerical investigation of wetting front migration and soil water distribution under vertical line source irrigation with different influencing factors“. Water Supply 21, Nr. 5 (24.02.2021): 2233–48. http://dx.doi.org/10.2166/ws.2021.054.

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Abstract Vertical line source irrigation (VLSI) is an underground irrigation method suitable for deep-rooted plants. Understanding the characteristics of the soil wetting body of the VLSI was the key to designing this irrigation system. On the basis of experimental verification of the reliability of the HYDRUS simulation results of VLSI under the conditions of soil texture (ST), initial water content (θi), line source buried depth (B), line source diameter (D) and line source length (L), numerical studies of the migration law of the wetting front of VLSI and the distribution characteristics of soil moisture were performed. The wetting front migration (WFM) was mainly influenced by ST, θi, D and L (P < 0.05), while B had little effect on WFM (P > 0.05). The shape of the soil wetting body changed little under different influencing factors. The water content contour was approximately ‘ellipsoidal’ around the line source. The soil moisture near the line source was close to the saturated moisture content. The moisture content around the line source gradually decreased outward, and the contour lines gradually became dense. According to the simulation results, a prediction model of multiple factors influencing the migration process of the VLSI wetting front was established. The predicted value was in good agreement with the measured value. The results of this research could provide a theoretical basis for further optimizing the combination of VLSI and irrigation elements.

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LIN, Y. C., T. Y. CHIU, M. F. TAI, B. N. LIN, P. C. GUAN und H. C. KU. „SUPERCONDUCTIVITY AND WEAK FERROMAGNETIC ORDER OF THE NEW RuCa2RCu2O8+δ (R=Pr, Nd, Sm, Eu, Gd) SYSTEM“. International Journal of Modern Physics B 19, Nr. 01n03 (30.01.2005): 339–43. http://dx.doi.org/10.1142/s0217979205028542.

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Superconducting onset temperatures T c up to 23-44 K are reported for the new RuCa 2 RCu 2 O 8+δ ( R = Pr , Nd , Sm , Eu , Gd ) system with a Ru -1212 RuCa 2 PrCu 2 O 8+δ-type structure. Preliminary study indicates that the crystal structure is an orthorhombic distortion of the tetragonal RuSr 2 GdCu 2 O 8+δ-type structure ,which has space group P4/mmm, T m~136 K , and T c( max )~65 K . With similar RuO 6 octahedral and CuO 5 pyramidal units, superconductivity from the Cu - O bi-layers apparently coexists with the weak ferromagnetic (WFM) order with magnetic ordering temperature T m~49 K . Low temperature anomalous in magnetic properties observed in both field-cooled (FC) and zero-field-cooled (ZFC) modes are closely related to the complex interplay and coexistence between weak ferromagnetic order and superconductivity as well as from structural distortion and sensitive sample oxygen concentration variation. No superconductivity or Ru -1212 structure can be detected for larger rare earth compounds R = La and Ce .

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Menendez, H. M., und L. O. Tedeschi. „The characterization of the cow-calf, stocker and feedlot cattle industry water footprint to assess the impact of livestock water use sustainability“. Journal of Agricultural Science 158, Nr. 5 (Juli 2020): 416–30. http://dx.doi.org/10.1017/s0021859620000672.

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AbstractPerception of freshwater use varies between nations and has led to concerns of how to evaluate water use for sustainable food production. The water footprint of beef cattle (WFB) is an important metric to determine current levels of freshwater use and to set sustainability goals. However, current WFB publications provide broad WF values with inconsistent units preventing direct comparison of WFB models. The water footprint assessment (WFA) methodologies use static physio-enviro-managerial equations, rather than dynamic, which limits their ability to estimate cattle water use. This study aimed to advance current WFA methods for WFB estimation by formulating the WFA into a system dynamics methodology to adequately characterize the major phases of the beef cattle industry and provide a tool to identify high-leverage solutions for complex water use systems. Texas is one of the largest cattle producing areas in the United States, a significant water user. This geolocation is an ideal template for WFB estimation in other regions due to its diverse geography, management-cultures, climate and natural resources. The Texas Beef Water Footprint model comprised seven submodels (cattle population, growth, nutrition, forage, WFB, supply chain and regional water use; 1432 state variables). Calibration of our model replicated initial WFB values from an independent study by Chapagain and Hoekstra in 2003 (CH2003). This CH2003 v. Texas production scenarios evaluated model parameters and assumptions and estimated a 41–66% WFB variability. The current model provides an insightful tool to improve complex, unsustainable and inefficient water use systems.

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Shahbazi, Sasha, Martin Kurdve, Mats Zackrisson, Christina Jönsson und Anna Runa Kristinsdottir. „Comparison of Four Environmental Assessment Tools in Swedish Manufacturing: A Case Study“. Sustainability 11, Nr. 7 (11.04.2019): 2173. http://dx.doi.org/10.3390/su11072173.

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To achieve sustainable development goals, it is essential to include the industrial system. There are sufficient numbers of tools and methods for measuring, assessing and improving the quality, productivity and efficiency of production, but the number of tools and methods for environmental initiatives on the shop floor is rather low. Incorporating environmental considerations into production and performance management systems still generally involves a top-down approach aggregated for an entire manufacturing plant. Green lean studies have been attempting to fill this gap to some extent, but the lack of detailed methodologies and practical tools for environmental manufacturing improvement on the shop floor is still evident. This paper reports on the application of four environmental assessment tools commonly used among Swedish manufacturing companies—Green Performance Map (GPM), Environmental Value Stream Mapping (EVSM), Waste Flow Mapping (WFM), and Life Cycle Assessment (LCA)—to help practitioners and scholars to understand the different features of each tool, so in turn the right tool(s) can be selected according to particular questions and the industrial settings. Because there are some overlap and differences between the tools and a given tool may be more appropriate to a situation depending on the question posed, a combination of tools is suggested to embrace different types of data collection and analysis to include different environmental impacts for better prioritization and decision-making.

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Heymann, J., O. Schneising, M. Reuter, M. Buchwitz, V. V. Rozanov, V. A. Velazco, H. Bovensmann und J. P. Burrows. „SCIAMACHY WFM-DOAS XCO<sub>2</sub>: comparison with CarbonTracker XCO<sub>2</sub> focusing on aerosols and thin clouds“. Atmospheric Measurement Techniques 5, Nr. 8 (13.08.2012): 1935–52. http://dx.doi.org/10.5194/amt-5-1935-2012.

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Abstract. Carbon dioxide (CO2) is the most important greenhouse gas whose atmospheric loading has been significantly increased by anthropogenic activity leading to global warming. Accurate measurements and models are needed in order to reliably predict our future climate. This, however, has challenging requirements. Errors in measurements and models need to be identified and minimised. In this context, we present a comparison between satellite-derived column-averaged dry air mole fractions of CO2, denoted XCO2, retrieved from SCIAMACHY/ENVISAT using the WFM-DOAS (weighting function modified differential optical absorption spectroscopy) algorithm, and output from NOAA's global CO2 modelling and assimilation system CarbonTracker. We investigate to what extent differences between these two data sets are influenced by systematic retrieval errors due to aerosols and unaccounted clouds. We analyse seven years of SCIAMACHY WFM-DOAS version 2.1 retrievals (WFMDv2.1) using CarbonTracker version 2010. We investigate to what extent the difference between SCIAMACHY and CarbonTracker XCO2 are temporally and spatially correlated with global aerosol and cloud data sets. For this purpose, we use a global aerosol data set generated within the European GEMS project, which is based on assimilated MODIS satellite data. For clouds, we use a data set derived from CALIOP/CALIPSO. We find significant correlations of the SCIAMACHY minus CarbonTracker XCO2 difference with thin clouds over the Southern Hemisphere. The maximum temporal correlation we find for Darwin, Australia (r2 = 54%). Large temporal correlations with thin clouds are also observed over other regions of the Southern Hemisphere (e.g. 43% for South America and 31% for South Africa). Over the Northern Hemisphere the temporal correlations are typically much lower. An exception is India, where large temporal correlations with clouds and aerosols have also been found. For all other regions the temporal correlations with aerosol are typically low. For the spatial correlations the picture is less clear. They are typically low for both aerosols and clouds, but depending on region and season, they may exceed 30% (the maximum value of 46% has been found for Darwin during September to November). Overall we find that the presence of thin clouds can potentially explain a significant fraction of the difference between SCIAMACHY WFMDv2.1 XCO2 and CarbonTracker over the Southern Hemisphere. Aerosols appear to be less of a problem. Our study indicates that the quality of the satellite derived XCO2 will significantly benefit from a reduction of scattering related retrieval errors at least for the Southern Hemisphere.

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Dissertationen zum Thema "WFM system"

Obrtlík, Josef. „Návrh a implementace CRM systému pomocí low-code platformy ve firemním prostředí“. Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2021. http://www.nusl.cz/ntk/nusl-444601.

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This master's thesis is focusing to create an operational CRM system in web interface of SystemBaker application in company environment – specifically for company named Mathesio s.r.o. In theoretical part there are explained concepts and technologies, which are needed to know to fully comprehend background of the developed application. Then there are introduced possible forms of developing this application, which serve for later assessment of economic benefits of this development form. In practical part there is de-scribed structure of database, use-cases and operational solution of this application and then economical assessment of benefits of this style of development.

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Eminovic, Nejra, und Rana Tajik. „How to Improve a Planning System and Workflow in a Quality Control Laboratory : A Case Study at Fresenius Kabi in Sweden“. Thesis, KTH, Industriell ekonomi och organisation (Inst.), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-300149.

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Laboratories within quality control are very complicated to schedule due to the high product mix and diversified products tested with many different analysts and instruments. Thus, it requires a flexible planning system to change and improve the overall lab performance and increase efficiency. This thesis is a case study in collaboration with Fresenius Kabi AB and the quality control (QC) department in Uppsala. The QC department has an inflow of batches from the production department as well as from internal customers. Internal customers usually send batches that are part of stability studies or projects. These stability batches arrive at the QC department within irregular intervals and sometimes tightly adjacent, making the QC planning more complex, creating backlogs. Hence, the question in the study is formulated: ● How to improve a planning system and workflow in a quality control department? The current condition of batch inflow and how the planning system is managed today have to be understood to answer the question. Hence, the following sub-questions will be answered: ○ How is the current planning system at the quality control structured? ○ How is the inflow of stability batches at the department made more even andpredictable? This study aims to accomplish a practical planning system to prevent WIP, bottlenecks, and backlogs. The thesis is based on a qualitative method involving an inductive approach. The data collected mainly includes data from incoming batches, interviews, and literature studiesto gain multiple perspectives on the covered area. The study results showed that the internal customers were not satisfied with the current delivery times of QC. The common patterns identified are that internal customers want more contact and cooperation with the QC department. Furthermore, the result shows that the QC can handle the batches that arrive, but the planning system is not good enough. The proposed improvements to the current planning system are mainly to change it to a longer-term planning system and introduce a standard log or planning system between the internal departments. Also, QC should reorganize the lab and schedule based on common analysis to accomplish a higher efficiency of the scheduling. Further recommendations include more transparency and precise planning between departments to improve the inflow of the stability batches.
Quality Control (QC) laboratorium är svåra att planera detta på grund den höga mängden och variationen av produkter. Det kräver således ett flexibelt planeringssystem för att förändra och förbättra prestandan och öka effektiviteten i laboratorier. Detta examensarbete är en fallstudie i samarbete med Fresenius Kabi AB och deras kvalitetsavdelningen i Uppsala. QC avdelningen har ett inflöde av batcher från produktionsavdelningen samt från de interna kunder. De interna kunderna skickar vanligtvis batcher som ingår i stabilitetsstudier eller projekt. Dessa stabilitets batchar inkommer till QC inom icke bestämda tidpunkter och ibland tätt inpå varandra, vilket försvårar planeringen inom QC vilket in sin tur skapar backloggar. Därav är frågeställningen i studien formulerad: ● Hur kan ett planeringssystem och arbetsflöde i ett kvalitetskontroll laboratoriumförbättras? För att kunna besvara denna frågeställning bör det aktuella planeringssystemet i avdelningen att undersökas. Därav kommer även dessa delfrågor att besvaras för att i denna studie: ● Hur är det nuvarande planeringssystemet strukturerat? ● Hur kan inflödet av stabilitets studier på avdelningen jämnas ut och bli mer förutsägbara? Syftet med denna studie är därav att effektivisera det nuvarande planeringssystem för att förhindra WIP, flaskhalsar och backlogs i QC avdelningen. Examensarbetet bygger på en kvalitativ metod med en induktiv forskningsansats. Den insamlade datan främst inkluderar data från inkommande batcher, intervjuer samt litteraturstudie för att få flera perspektiv av det undersökta ämnesområdet. Studiens resultat visade att samtliga interna kunder inte är nöjda med de nuvarande leveranstider som QC har. De gemensamma mönster som identifierats är att de interna kunderna önskar mer kontakt och samarbete med QC avdelningen. Vidare visar resultatet att QC bör ha kapaciteten som krävs för att kunna hanterade batcher som inkommer men att planeringen inte är tillräckligt bra. De förbättringsförslag som föreslås till det nuvarande planeringssystemet är främst att utveckla en mer långsiktig planering samt införa en gemensam logg. QC avdelningen på Fresenius Kabi bör även se över sin organisering och dela in grupper baserat på analyser och inte utrustning. Vidare rekommendationer inkluderar mer transparent och tydlig planering mellan avdelningarna.

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Rothnie, Derek Malcolm. „Link optimisation for optical WDM transmission systems“. Thesis, University College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298281.

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Wongpaibool, Virach. „Effect of Dispersion on SS-WDM Systems“. Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36992.

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The purpose of this thesis is to investigate the effect of dispersion on a spectrum-sliced WDM (SS-WDM) system, specifically a system employing a single-mode optical fiber. The system performance is expressed in term of the receiver sensitivity defined as the average number of photon per bit N_p required for a given probability of bit error P_e. The receiver sensitivity is expressed in terms of two normalized parameters: the ratio of the optical bandwidth per channel and the bit rate m=B₀/R_b=B₀T, and the transmission distance normalized by the dispersion distance z/L_D. The former represents the effect of the excess beat noise caused by the signal fluctuation. The latter represents the effect of dispersion. The excess beat noise can be reduced by increasing the value of m (increasing the optical bandwidth B₀ for a given bit rate R_b). However, a large m implies that the degradation due to the dispersion is severe in a system employing a single-mode fiber. Therefore, there should be an optimum m resulting from the two effects. The theoretical results obtained from our analysis have confirmed this prediction. It is also shown that the optimum m (m_opt) decreases with an increase in the normalized distance. This suggests that the dispersion strongly affects the system performance. The increase in the excess beat noise is traded for the decrease in the dispersion effect. Additionally, the maximum transmission distance is relatively short, compared to that in a laser-based system. This suggests that the SS-WDM systems with single-mode fibers are suitable for short-haul systems, such as high-speed local-access network where the operating bit rate is high but the transmission distance is relatively short.
Master of Science

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Buyuksahin, Oncel F. Feza. „Modulation Formats For Wavelength Division Multiplexing (wdm) Systems“. Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12611039/index.pdf.

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Optical communication networks are becoming the backbone of both national and international telecommunication networks. With the progress of optical communication systems, and the constraints brought by WDM transmissions and increased bit rates, new ways to convert the binary data signal on the optical carrier have been proposed. There are different factors that should be considered for the right choice of modulation format, such as information spectral density (ISD), power margin, and tolerance against group-velocity dispersion (GVD) and against fiber nonlinear effects like self-phase modulation (SPM), cross-phase modulation (XPM), four-wave mixing (FWM), and stimulated Raman scattering (SRS). In this dissertation, the several very important modulation formats such as Non Return to Zero (NRZ), Return to Zero (RZ), Chirped Return to Zero (CRZ), Carrier Suppressed Return to Zero (CSRZ), Differential Phase Shift Keying (PSK) and Carrier Suppressed Return to Zero- Differential Phase Shift Keying (CSRZ-DPSK) will be detailed and compared. In order to make performance analysis of such modulation formats, the simulation will be done by using VPItransmissionMakerTM WDM software.

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Devaney, John F. L. „WDM of solitons in dispersion managed transmission systems“. Thesis, Aston University, 1998. http://publications.aston.ac.uk/7977/.

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This thesis investigates the physical behaviour of solitons in wavelength division multiplexed (WDM) systems with dispersion management in a wide range of dispersion regimes. Background material is presented to show how solitons propagate in optical fibres, and key problems associated with real systems are outlined. Problems due to collision induced frequency shifts are calculated using numerical simulation, and these results compared with analytical techniques where possible. Different two-step dispersion regimes, as well as the special cases of uniform and exponentially profiled systems, are identified and investigated. In shallow profile, the constituent second-order dispersions in the system are always close to the average soliton value. It is shown that collision-induced frequency shifts in WDM soliton transmission systems are reduced with increasing dispersion management. New resonances in the collision dynamics are illustrated, due to the relative motion induced by the dispersion map. Consideration of third-order dispersion is shown to modify the effects of collision-induced timing jitter and third-order compensation investigated. In all cases pseudo-phase-matched four-wave mixing was found to be insignificant compared to collision induced frequency shift in causing deterioration of data. It is also demonstrated that all these effects are additive with that of Gordon-Haus jitter.

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Cobbing, Benedict Louis. „The use of Landsat ETM imagery as a suitable data capture source for alien acacia species for the WFW programme“. Thesis, Rhodes University, 2007. http://hdl.handle.net/10962/d1005532.

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Geographic Information System technology today allows for the rapid analysis of vast amounts of spatial and non-spatial data. The power of a GIS can only be effected with the rapid collection of accurate input data. This is particularly true in the case of the South African National Working for Water (WFW) Programme where large volumes of spatial data on alien vegetation infestations are captured throughout the country. Alien vegetation clearing contracts cannot be generated, for WFW, without this data, so that the accurate capture of such data is crucial to the success of the programme. Mapping Invasive Alien Plant (IAP) data within WFW is a perennial problem (Coetzee, pers com, 2002), because not enough mapping is being done to meet the annual requirements of the programme in the various provinces. This is re-iterated by Richardson, 2004, who states that there is a shortage of accurate data on IAP abundance in South Africa. Therefore there is a need to investigate alternate methods of data capture; such as remote sensing, whilst working within the existing WFW data capture standards. The aim of this research was to investigate the use of Landsat ETM imagery as a data capture source for mapping alien vegetation for the WFW Programme in terms of their approved mapping methods, for both automated and manual classification techniques. The automated and manual classification results were compared to control data captured by differential Global Positioning Systems (DGPS). The research tested the various methods of data capture using Landsat ETM images over a range of study sites of varying complexity: a simple grassland area, a medium complexity grassy fynbos site and a complicated indigenous forest site. An important component of the research was to develop a mapping (classification) Ranking System based upon variables identified by WFW as fundamental in data capture decision making: spatial and positional accuracy, time constraints and cost constraints for three typical alien invaded areas. The mapping Ranking System compared the results of the various mapping methods for each factor for the study sites against each other. This provided an indication of which mapping method is the most efficient or suitable for a particular area.

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Li, Wei. „Modeling and simulation of wavelength-tunable laser diodes for WDM system“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0025/NQ51209.pdf.

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Gerdin, Hulkko Johan. „Muspel and Surtr : CVD system and control program for WF6 chemistry“. Licentiate thesis, Uppsala universitet, Oorganisk kemi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-380973.

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CVD (Chemical Vapour Deposition) is an advanced technique for depositing a coating on a substrate. CVD implies that a solid phase is deposited on a normally heated substrate surface using a reactive, gaseous mixture. The reaction gas mixture must be carefully chosen to prevent homogeneous nucleation in the gas phase. As the solid phase is formed, gaseous by-products are formed and they must be removed from the CVD system. The thermally activated CVD process requires a deposition system which can regulate the total pressure and mass flows of the separate gas components as well as maintain a sufficiently high temperature to initiate a chemical reaction on the substrate surface. In this thesis a new CVD system was constructed to meet these challenges. Initially it will be used to deposit hard, wear resistant coatings but by changing the gases, it is possible to explore other chemical systems. The CVD system functions well up to a deposition temperature of 1100 ºC as long as the CVD processes are thermally activated. Apart from manual operation, a LabView control interface was implemented that can automate process steps by reading recipe files as csv (comma-separated variables). In this way complex coating architectures can be deposited. The aim of this thesis is to give a detailed description of the hardware set-up and of the software developed for it. Provided in this work are also a few examples of W and WN (tungsten nitride) coatings, including a multi-layered structure to show the potential of complex structures. Since the system also contains a titanium precursor, a TiN (titanium nitride) coating is presented to conceptually show the flexibility of the equipment.
CVD är en avancerad teknik för att lägga en tunn film runt ett substrat. CVD innebär att en fast fas bildas på den normalt uppvärmda substratytan från en reaktiv gasblandning. Gasblandningen är väl vald att inte förorsaka homogen kärnbildning i gasfasen. När den fasta fasen bildas så bildas också gasformiga biprodukter som måste pumpas ut ur systemet. Den termiskt aktiverade CVD processen kräver ett system som kan styra total trycket och massflödet av de individuella gaskomponenterna samt hålla en tillräcklig temperatur för att initiera kemiska reaktioner på substratytan. I denna avhandling presenteras ett CVD-system byggt för att möta dessa utmaningar. Initialt kommer systemet att deponera hårda, slittåliga skikt men genom gasbyte byte av gas kan andra materialsystem utforskas. CVD-systemet kan deponera andra typer av filmer upp till en deponeringstemperatur på 1100°C så länge som CVD-processerna är termiskt aktiverade. Utöver manuell styrning har ett styrprogram i LabView implementerats för att medge automatisering av processtegen genom att läsa av receptfiler i csv-format. På det här sättet kan mer komplicerade skiktarkitekturer deponeras. Målet med detta arbete är att ge en detaljerad beskrivning av uppställningen samt mjukvaran som framställts. Ett antal exempel på W- (volfram) och WN-skikt (volframnitrid) presenteras tillsammans med en multiskiktslösning för att visa potentialen för komplicerade strukturer. Eftersom systemet även har tillgång till en titankälla presenteras ett TiN-skikt (titannitrid) för att konceptuellt demonstrera utrustningens flexibilitet.

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Joshi, Ajay Jayant. „Wave-Pipelined Multiplexed (WPM) Routing for Gigascale Integration (GSI)“. Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10549.

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The main objective of this research is to develop a pervasive wire sharing technique that can be easily applied across the entire range of on-chip interconnects in a very large scale integration (VLSI) system. A wave-pipelined multiplexed (WPM) routing technique that can be applied both intra-macrocell and inter-macrocell interconnects is proposed in this thesis. It is shown that an extensive application of the WPM routing technique can provide significant advantages in terms of area, power and performance. In order to study the WPM routing technique, a hierarchical approach is adopted. A circuit-level, system-level and physical-level analysis is completed to explore the limits and opportunities to apply WPM routing to current VLSI and future gigascale integration (GSI) systems. Design, verification and optimization of the WPM circuit and measurement of its tolerance to external noise constitute the circuit-level analysis. The physical-level study involves designing wire sharing-aware placement algorithms to maximize the advantages of WPM routing. A system-level simulator that designs the entire multilevel interconnect network is developed to perform the system-level analysis. The effect of WPM routing on a full-custom interconnect network and a semi-custom interconnect network is studied.

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Bücher zum Thema "WFM system"

Perlicki, Krzysztof. Systemy transmisji optycznej WDM. Warszawa: Wydawnictwa Komunikacji i Łączności, 2007.

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Antoniades, Neophytos, Georgios Ellinas und Ioannis Roudas, Hrsg. WDM Systems and Networks. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-1093-5.

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Costello, Thomas R. Water data management (WDM) system: User guide. [Washington, D.C.?]: U.S. Dept. of the Interior, Bureau of Land Management, 1987.

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Optical networking & WDM. New York: Osborne/McGraw-Hill, 2001.

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Hasegawa, Akira, Hrsg. Massive WDM and TDM Soliton Transmission Systems. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/0-306-47125-6.

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Folwell, Matt. System for processing and analyzing WIM and AVC data. Helena]: Montana Dept. of Transportation, 1997.

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Antoniades, Neophytos (Neo). WDM Systems and Networks: Modeling, Simulation, Design and Engineering. New York, NY: Springer Science+Business Media, LLC, 2012.

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Huang, Yun-Yao. A simple analytical model for asynchronous dense WDM/OOK systems. Monterey, Calif: Naval Postgraduate School, 1994.

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Akira, Hasegawa. Massive WDM and TDM soliton transmission systems: A ROSC symposium. New York: Kluwer Academic, 2002.

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Alex, Galis, Hrsg. Deploying and managing IP over WDM networks. Boston, MA: Artech House, 2003.

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Buchteile zum Thema "WFM system"

Faustmann, Gert. „Workflow-Management-System WAM“. In Ausnahmebehandlung im Workflow-Management, 73–94. Wiesbaden: Deutscher Universitätsverlag, 2000. http://dx.doi.org/10.1007/978-3-663-08260-6_3.

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Vollhaber, Tomas. „Das D'Amato-System - eine Oper in Laut- und Gebärdensprache“. In Wem gehört die Gebärdensprache?, 371–88. Bielefeld, Germany: transcript Verlag, 2021. http://dx.doi.org/10.14361/9783839454558-021.

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Schachler, Viviane. „Einleitung“. In Beiträge zur Teilhabeforschung, 1–5. Wiesbaden: Springer Fachmedien Wiesbaden, 2021. http://dx.doi.org/10.1007/978-3-658-35383-4_1.

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ZusammenfassungWozu gibt es Werkstatträte in Werkstätten für behinderte Menschen (WfbM)? Wie charakterisieren sich die dortigen Arbeitsbeziehungen? Wie arbeiten Werkstatträte und gelingt es ihnen, ihre Rechte zu mobilisieren? Kann sich in einem separierenden System Partizipation vollziehen und ist es gerechtfertigt, den Beteiligungsanspruch in WfbM bzw. dessen Einlösung als Partizipation zu bezeichnen? Fragen wie diese gaben den Impuls dazu, die Thematik der Werkstatträte in dieser Arbeit aufzugreifen. Nach Artikel 27 Abs. 1 UN-Behindertenrechtskonvention (UN-BRK) ist eine gleichberechtigte Erwerbsarbeit von Menschen mit Behinderungen in einem „integrativen“ Umfeld normativ intendiert. Gleichwohl vollzieht sich in Deutschland die berufliche Realität für derzeit rund 300.000 Personen mit Behinderungen in WfbM (Bundesarbeitsgemeinschaft WfbM e. V. [BAG WfbM], 2020a).

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Bensberg, Frank. „Entwicklung des WLM-Systems AutoGen“. In Web Log Mining als Instrument der Marketingforschung, 177–215. Wiesbaden: Deutscher Universitätsverlag, 2001. http://dx.doi.org/10.1007/978-3-322-91505-4_5.

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Jangir, Anil Kumar, Baria Dipikaben Manharbhai und Ravi Kumar Maddila. „WDM-Based Visible Light Communication System“. In Lecture Notes in Electrical Engineering, 211–17. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7395-3_24.

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Hell, Thorsten, Eckhard Kohlhas, Sascha Schlobinski, Ralf Denzer und Reiner Güttler. „An Information System Supporting WFD Reporting“. In IFIP Advances in Information and Communication Technology, 403–13. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-41151-9_38.

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Monroy, Idelfonso Tafur, und Eduward Tangdiongga. „Crosstalk in Optically Pre-Amplified Systems“. In Crosstalk in WDM Communication Networks, 87–105. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4757-3594-9_6.

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Monroy, Idelfonso Tafur, und Eduward Tangdiongga. „Crosstalk Mitigation in WDM Systems: Experiment“. In Crosstalk in WDM Communication Networks, 157–78. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4757-3594-9_9.

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Koonen, Ton, Kees Steenbergen, Fons Janssen und Jeroen Wellen. „WDM Systems for the Access Network“. In Optical Networking, 246–47. London: Springer London, 1999. http://dx.doi.org/10.1007/978-1-4471-0525-1_27.

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Haefer, René A. „Schichten aus organischen Polymeren und dispersen Systemen“. In WFT Werkstoff-Forschung und -Technik, 262–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-82835-5_15.

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Konferenzberichte zum Thema "WFM system"

Yaïci, Wahiba, Evgueniy Entchev und Pouyan Talebizadeh Sardari. „Performance Investigation of Solar Organic Rankine Cycle Systems With and Without Regeneration and With Zeotropic Working Fluid Mixtures for Use in Micro-Cogeneration“. In ASME 2020 14th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/es2020-1616.

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Abstract Globally there are several viable sources of renewable, low-temperature heat (below 130°C) particularly solar energy, geothermal energy, and energy generated from industrial wastes. Increased exploitation of these low-temperature options has the definite potential of reducing fossil fuel consumption with its attendant very harmful greenhouse gas emissions. Researchers have universally identified the organic Rankine cycle (ORC) as a practicable and promising system to generate electrical power from renewable sources based on its beneficial use of volatile organic fluids as working fluids (WFs). In recent times, researchers have also shown a preference for/an inclination towards deployment of zeotropic mixtures as ORC WFs because of their capacity to improve thermodynamic performance of ORC systems, a feat enabled by better matches of the temperature profiles of the WF and the heat source/sink. This paper demonstrates both the technical feasibility and the notable advantages of using zeotropic mixtures as WFs through a simulation study of an ORC system. The study examines the thermodynamic performance of ORC systems using zeotropic WF mixtures to generate electricity driven by low-temperature solar heat source for building applications. A thermodynamic model is developed with an ORC system both with and excluding a regenerator. Five zeotropic mixtures with varying compositions of R245fa/propane, R245fa/hexane, R245fa/heptane, pentane/hexane and isopentane/hexane are evaluated and compared to identify the best combinations of WF mixtures that can yield high efficiency in their system cycles. The study also investigates the effects of the volumetric flow ratio, and evaporation and condensation temperature glides on the ORC’s thermodynamic performance. Following a detailed analysis of each mixture, R245fa/propane is selected for parametric study to examine the effects of operating parameters on the system’s efficiency and sustainability index. For zeotropic mixtures, results showed that there is an optimal composition range within which binary mixtures are inclined to perform more efficiently than the component pure fluids. In addition, a significant increase in cycle efficiency can be achieved with a regenerative ORC, with cycle efficiency ranging between 3.1–9.8% and 8.6–17.4% for ORC both without and with regeneration, respectively. Results also showed that exploiting zeotropic mixtures could enlarge the limitation experienced in selecting WFs for low-temperature solar organic Rankine cycles.

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Yaïci, Wahiba, und Evgueniy Entchev. „Thermodynamic and Performance Study of Solar Regenerative Organic Rankine Cycle System for Use in Residential Micro-Combined Heat and Power Generation“. In ASME 2019 13th International Conference on Energy Sustainability collocated with the ASME 2019 Heat Transfer Summer Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/es2019-3832.

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Abstract A continued increase in both energy demand and greenhouse gas emissions (GHGs) call for utilising energy sources effectively. In comparison with traditional energy set-ups, micro-combined heat and power (micro-CHP) generation is viewed as an effective alternative; the aforementioned system’s definite electrical and thermal generation may be attributed to an augmented energy efficiency, decreased capacity as well as GHGs percentage. In this regard, organic Rankine cycle (ORC) has gained increasing recognition as a system, which is capable for generating electrical power from solar-based, waste heat, or thermal energy sources of a lower quality, for instance, below 120 °C. This study focuses on investigating a solar-based micro-CHP system’s performance for use in residential buildings through utilising a regenerative ORC. The analysis will focus on modelling and simulation as well as optimisation of operating condition of several working fluids (WFs) in ORC in order to use a heat source with low-temperature derived from solar thermal collectors for both heat and power generation. A parametric study has been carried out in detail for analysing the effects of different WFs at varying temperatures and flowrates from hot and cold sources on system performance. Significant changes were revealed in the study’s outcomes regarding performance including efficiency as well as power obtained from the expander and generator, taking into account the different temperatures of hot and cold sources for each WF. Work extraction carried out by the expander and electrical power had a range suitable for residential building applications; this range was 0.5–5 kWe with up to 60% electrical isentropic efficiency and up to 8% cycle efficiency for 50–120 °C temperature from a hot source. The operation of WFs will occur in the hot source temperature range, allowing the usage of either solar flat plate or evacuated tube collectors.

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Ding, Yi, und Li R. Cheng. „Dynamic Calibration of a Weigh in Motion System“. In 2018 Joint Rail Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/jrc2018-6222.

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The dynamic nature of a train in operation is caused by variables in rail condition, track smoothness, wheel defects, truck hunting and skewing, and coupler effects. These conditions can each cause perturbations that may affect the accuracy of the weight measured by a Weigh In Motion (WIM) system. China is the only country that has mandatory requirements to calibrate a WIM system dynamically after it is initially installed and every year after it’s in revenue service. This paper talks about the importance of both static and dynamic calibrations to achieve the highest accuracy of a WIM system. This paper also describes the process of conducting a dynamic calibration, and the lessons learned in the past several years in the effort to improve the weight accuracy of a WIM system.

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Frenkel, Matthew, Marlon Avellan und Zhixiong Guo. „Optical Whispering-Gallery Mode Phenomenon as a Composite Sensor With Applications to Direct On-Chip Thermal Sensing“. In ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ht2013-17245.

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Optical Whispering-Gallery Mode (WGM) resonators can be fabricated with very high quality factors allowing for their use as high resolution sensors in a myriad of fields ranging from quantum electro-dynamics (QED) to pressure sensing. In this paper, we focus on integrating WGM as a dynamic temperature measurement device. The WGM sensors are fabricated onto the heating element, instead of acting as an indirect temperature sensor, allowing for direct monitoring of an area of interest. An adaptation to the WGM theoretical model, to include the thermal expansion of the composite system, is discussed and analyzed.

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Glista, Andrew S., und John Nahvi. „A Broadband Wave Division Multiplexed (WDM) Local Area Network for Military Aircraft Using Commercial Off-the-Shelf (COTS) Components“. In ASME 2003 International Electronic Packaging Technical Conference and Exhibition. ASMEDC, 2003. http://dx.doi.org/10.1115/ipack2003-35062.

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The US Naval Air Systems Command (NAVAIR) has recognized the need to rapidly test and evaluate (T&E) Generation II commercial, fiber optic and photonic components for use in harsh, military aerospace environments. This paper describes the Wavelength Division Multiplexed (WDM) Fiber-Optic Network (FON) demonstration program for the Navy EA-6B aircraft. The EA-6B Integrated Program Team is designing, developing and flight-testing a broadband fiber-optic Local Area Network (LAN) using ruggedized commercial WDM components and single mode cables and connectors. This WDM fiber optic backbone will be the first test demonstration of a network capable of simultaneously transferring both multi-protocol digital information and broadband radio frequency (RF) analog signals. Flight-testing of the digital portion of the system will take place on the EA-6B Tactical Electronic Attack aircraft with the support of NAVAIR at Patuxent River, MD. RF performance testing will take place at the Naval Air Warfare Center, Pt. Mugu California EA-6B Weapon System Support Laboratory. The first phase of this program [Flight Testing Optical Communication Using Open Standards (FOCUS) Phase I] demonstrated the survivability of Commercial Off-the-Shelf (COTS) fiber-optic single mode and multi-mode network hardware technology (cables, connectors, transmitters, receivers, encoders, decoders, and test equipment) on the EA-6B aircraft. The objective of the second phase of this program (FOCUS Phase II) is to design, develop, test and demonstrate, in the laboratory a (WDM ) network capable of simultaneously transmitting ultra wideband Radio Frequency (RF) analog signals as well as digital transmission protocols including Ethernet (10baseT), MIL-STD-1553, and ARINC-429 (et. al.) over a single fiber cable. The WDM FON system will then be installed and tested in the EA-6B aircraft. This paper will describe the backbone network design, which includes the network topology, test results on the proposed COTS components (lasers, couplers, add/drops, receivers etc.), and bandwidth allocation on the International Telecommunications Union (ITU) grid. Packaging of the COTS components to survive the extremely harsh military aircraft environment is also described.

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Zadbood, Amineh, Nicholas Russo und Steven Hoffenson. „Word-of-Mouth Recommendations in an Automobile Market System“. In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97680.

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Abstract Improving design in the context of market systems requires an understanding of how consumers learn about and evaluate competing products. Marketing models frequently assume that consumers choose the product with the highest utility, which provides businesses insights into how to design and price their products to maximize profits. While recent research has shown the impacts of consumer interactions within social networks on their purchasing decisions, they typically model market systems using a top-down approach. This paper applies an agent-based modeling approach with social network models to investigate the extent to which word-of-mouth (WOM) communications are influential in changing consumer preferences and producer market performance. Using a random network, we study the effects of the number of referrals for a product and the degrees of similarity between the senders and receivers of referrals on purchase decisions. In addition, the eigenvector centrality metric is used to analyze the spread of WOM referrals. The simulation results show that the most influential consumers in the network can create significant shifts in the market share, and a statistical analysis reveals a significant change in the system-level metrics of interest for the competing firms when WOM recommendations are included. The findings incentivize producers to invest in supporting their product development efforts with rigorous social networks analysis so as to increase their market success.

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Yoong, Carlos, Anders Thorin und Mathias Legrand. „The Wave Finite Element Method Applied to a One-Dimensional Linear Elastodynamic Problem With Unilateral Constraints“. In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46919.

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The Wave Finite Element Method (WFEM) is implemented to accurately capture travelling waves propagating at a finite speed within a bouncing rod system and induced by unilateral contact collisions with a rigid foundation; friction is not accounted for. As opposed to the traditional Finite Element Method (FEM) within a time-stepping framework, potential discontinuous deformation, stress and velocity wave fronts are accurately described, which is critical for the problem of interest. A one-dimensional benchmark with an analytical solution is investigated. The WFEM is compared to two time-stepping solution methods formulated on a FEM semi-discretization in space: (1) an explicit technique involving Lagrange multipliers and (2) a non-smooth approach implemented in the Siconos package. Attention is paid to the Gibb’s phenomenon generated during and after contact occurrences together with the time evolution of the total energy of the system. It is numerically found that the WFEM outperforms the FEM and Siconos solution methods because it does not induce any spurious oscillations or dispersion and diffusion of the shock wave. Furthermore, energy is not dissipated over time. More importantly, the WFEM does not require any impact law to close the system of governing equations.

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Huang, Lei, und Zhixiong Guo. „Nano Filtration and Sensing of Aminoglycosides Using Whispering-Gallery Mode Resonators“. In ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/mnhmt2012-75174.

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For the first time optical WGM micro resonator embedded in a microelectrofluidic system with integrated functions in sensing and nano filtration was proposed. Aminoglycosides were considered as the analyte molecules. The filtration process and analyte concentration were traced by measuring the WGM resonance frequency shift. A correlation between the frequency shift, and the analyte feed concentration and the applied voltage gradient was obtained, which reveals a linear relationship between the resonance frequency shift and the analyte concentration and an exponential growth with the applied voltage gradient. The applied voltage gradient influences the filtration capability through its effect on adsorption and desorption processes. The second-order WGM was found to be able to provide a higher sensitivity as compared with the first-order. The WGM sensor was found to function at pico Molar concentration.

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Wang, Zheng, Jimmy Tsai, Yan Pan, Dan Kilper und Lacra Pavel. „Control of channel power excursions at sudden reconfiguration or faults in a ROADM-based WDM network“. In 2013 Conference on Control and Fault-Tolerant Systems (SysTol). IEEE, 2013. http://dx.doi.org/10.1109/systol.2013.6693905.

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Kiesel, Peter, Markus Beck, Joerg Martini, Noble Johnson und Malte Huck. „Opto-fluidic detection system enabling sophisticated point-of-care diagnostics“. In 2011 IEEE Winter Topicals (WTM). IEEE, 2011. http://dx.doi.org/10.1109/photwtm.2011.5730047.

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Berichte der Organisationen zum Thema "WFM system"

Dapkus, P. D. Ultrashort Pulse, Monolithic Modelocked Lasers for WDM Systems. Fort Belvoir, VA: Defense Technical Information Center, Mai 2001. http://dx.doi.org/10.21236/ada387721.

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WILLIAMS, J. C. Analysis of Waste Leak and Toxic Chemical Release Accidents from Waste Feed Delivery (WFD) Diluent System. Office of Scientific and Technical Information (OSTI), September 2000. http://dx.doi.org/10.2172/804845.

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Shaw, C. P. References for HNF-SD-WM-TRD-007, ``System specification for the double-shell tank system: HNF-PROs, CFRs, DOE Orders, WACs``. Office of Scientific and Technical Information (OSTI), Juli 1998. http://dx.doi.org/10.2172/362430.

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Chapman, Ray, Phu Luong, Sung-Chan Kim und Earl Hayter. Development of three-dimensional wetting and drying algorithm for the Geophysical Scale Transport Multi-Block Hydrodynamic Sediment and Water Quality Transport Modeling System (GSMB). Engineer Research and Development Center (U.S.), Juli 2021. http://dx.doi.org/10.21079/11681/41085.

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The Environmental Laboratory (EL) and the Coastal and Hydraulics Laboratory (CHL) have jointly completed a number of large-scale hydrodynamic, sediment and water quality transport studies. EL and CHL have successfully executed these studies utilizing the Geophysical Scale Transport Modeling System (GSMB). The model framework of GSMB is composed of multiple process models as shown in Figure 1. Figure 1 shows that the United States Army Corps of Engineers (USACE) accepted wave, hydrodynamic, sediment and water quality transport models are directly and indirectly linked within the GSMB framework. The components of GSMB are the two-dimensional (2D) deep-water wave action model (WAM) (Komen et al. 1994, Jensen et al. 2012), data from meteorological model (MET) (e.g., Saha et al. 2010 - http://journals.ametsoc.org/doi/pdf/10.1175/2010BAMS3001.1), shallow water wave models (STWAVE) (Smith et al. 1999), Coastal Modeling System wave (CMS-WAVE) (Lin et al. 2008), the large-scale, unstructured two-dimensional Advanced Circulation (2D ADCIRC) hydrodynamic model (http://www.adcirc.org), and the regional scale models, Curvilinear Hydrodynamics in three dimensions-Multi-Block (CH3D-MB) (Luong and Chapman 2009), which is the multi-block (MB) version of Curvilinear Hydrodynamics in three-dimensions-Waterways Experiments Station (CH3D-WES) (Chapman et al. 1996, Chapman et al. 2009), MB CH3D-SEDZLJ sediment transport model (Hayter et al. 2012), and CE-QUAL Management - ICM water quality model (Bunch et al. 2003, Cerco and Cole 1994). Task 1 of the DOER project, “Modeling Transport in Wetting/Drying and Vegetated Regions,” is to implement and test three-dimensional (3D) wetting and drying (W/D) within GSMB. This technical note describes the methods and results of Task 1. The original W/D routines were restricted to a single vertical layer or depth-averaged simulations. In order to retain the required 3D or multi-layer capability of MB-CH3D, a multi-block version with variable block layers was developed (Chapman and Luong 2009). This approach requires a combination of grid decomposition, MB, and Message Passing Interface (MPI) communication (Snir et al. 1998). The MB single layer W/D has demonstrated itself as an effective tool in hyper-tide environments, such as Cook Inlet, Alaska (Hayter et al. 2012). The code modifications, implementation, and testing of a fully 3D W/D are described in the following sections of this technical note.

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